We're not taking donations, and there's no requirement the recipient be a charity. This is a user-driven contribution system, users decide to opt in, hold custody of tokens, and let browsing automation + any manual pinning or adjusting the like drive the tokens to creators.
If creators don't register after a decently long interval, the tokens flow back to the user growth pool. Users may choose to support only verified creators/publishers. As we scale up this user growth pool "powerball" effect goes away, and the BAT becomes more dear vs. fiat, so the pool lasts longer as grants and matching scale down in token quantity per user.